Prep the banana: If you haven’t already, peel and slice a ripe banana and freeze the slices.
This gives the smoothie a thick, creamy texture.
Add ingredients to the blender: Place the banana, peanut butter, yogurt, 3/4 cup milk, vanilla, cinnamon, and a small pinch of salt into your blender.
Blend until smooth: Start on low, then increase to high until everything is creamy with no chunks. If it’s too thick, add a little more milk.
Taste and adjust: Blend in honey or maple syrup if you want more sweetness. For extra chill, add a couple of ice cubes and blend again.
Serve: Pour into a glass and enjoy right away.
If you like, top with a sprinkle of cinnamon or a few banana slices.